Hair comb



FIG. 1 is a perspective view of a hair comb showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof, the left side view being a mirror image of the right side view; and,

FIG. 4 is a top plan view thereof. 

CLAIM The ornamental design for a hair comb, as shown and described. 